As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FAULT ILLUMINATED, RAN QRH, TRIED RESTART, NO HELP. DURING START ON GROUND. GROUNDED - YES. PERFORMED APU BITE TEST PER FIM 49-60 TASK 801. NO CURRENT FAULTS NOTED. RAN AND OPERATED APU PER AMM 49-11-00-860-801. NO FAULTS NOTED. OPS CHECK NORMAL WITH AND WITHOUT LOADS APPLIED. THIS CLEARS MEL 49-1B.